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CD54HC245 Datasheet(PDF) 1 Page - Texas Instruments |
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CD54HC245 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 12 page 1 Data sheet acquired from Harris Semiconductor SCHS119A Features • Buffered Inputs • Three-State Outputs • Bus Line Driving Capability • Typical Propagation Delay (A to B, B to A) 9ns at VCC = 5V, CL = 15pF, TA = 25 oC • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Pinout CD54HC245, CD54HCT245 (CERDIP) CD74HC245, CD74HCT245 (PDIP, SOIC) TOP VIEW Description The CD54HC245, CD54HCT245, and CD74HC245, CD74HCT245 are high-speed octal three-state bidirectional transceivers intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation while driving large bus capacitances. They provide the low power consumption of standard CMOS circuits with speeds and drive capabilities comparable to that of LSTTL circuits. The CD54HC245, CD54HCT245, CD74HC245 and CD74HCT245 allow data transmission of the B bus or from the B bus to the A bus. The logic level at the direction input (DIR) determines the direction. The output enable input (OE), when high, puts the I/O ports in the high-impedance state. The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643. 11 12 13 14 15 16 17 18 20 19 10 9 8 7 6 5 4 3 2 1 DIR A0 A1 A2 A3 A4 A6 A5 A7 GND VCC B0 B1 B2 OE B3 B4 B5 B6 B7 Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE CD54HC245F3A -55 to 125 20 Ld CERDIP CD54HCT245F3A -55 to 125 20 Ld CERDIP CD74HC245E -55 to 125 20 Ld PDIP CD74HC245M -55 to 125 20 Ld SOIC CD74HC245M96 -55 to 125 20 Ld SOIC CD74HCT245E -55 to 125 20 Ld PDIP CD74HCT245M -55 to 125 20 Ld SOIC CD74HCT245M96 -55 to 125 20 Ld SOIC NOTE: When ordering, use the entire part number. The suffix 96 denotes tape and reel. CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2003, Texas Instruments Incorporated CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 High-Speed CMOS Logic Octal-Bus Transceiver, Three-State, Non-Inverting [ /Title (CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5) /Sub- ject (High Speed November 1997 - Revised May 2003 |
Similar Part No. - CD54HC245_03 |
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Similar Description - CD54HC245_03 |
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